Select the correct answer from each drop-down menu.
A line AB is tangent on a circle O at point A. Line AC is the diameter of the circle. A secant is drawn from point C on the circle to B forming a triangle. A line connects center O with external point B, pass through point D on the circumference.

For circle O,
and m∠ABC = 55°.

In the figure, ∠
and ∠
have measures equal to 35°.